Experimental study of the triple-gluon vertex
In four-jet events from e+e-→Z0→multihadrons one can separate the three principal contributions from the triple-gluon vertex, double gluon-bremsstrahlung and the secondary quark-antiquark production, using the shape of the two-dimensional angular distributions in the generalized Nachtmann-Reiter ang...
| मुख्य लेखकों: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| स्वरूप: | Journal article |
| भाषा: | English |
| प्रकाशित: |
1991
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| _version_ | 1826296020553695232 |
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| author | Abreu, P Adam, W Adami, F Adye, T Akesson, T Alekseev, G Allen, P Almehed, S Alted, F Alvsvaag, S Amaldi, U Anassontzis, E Apel, W Asman, B Astier, P Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, D Baroncelli, A Barring, O Bartl, W |
| author_facet | Abreu, P Adam, W Adami, F Adye, T Akesson, T Alekseev, G Allen, P Almehed, S Alted, F Alvsvaag, S Amaldi, U Anassontzis, E Apel, W Asman, B Astier, P Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, D Baroncelli, A Barring, O Bartl, W |
| author_sort | Abreu, P |
| collection | OXFORD |
| description | In four-jet events from e+e-→Z0→multihadrons one can separate the three principal contributions from the triple-gluon vertex, double gluon-bremsstrahlung and the secondary quark-antiquark production, using the shape of the two-dimensional angular distributions in the generalized Nachtmann-Reiter angle 0NR* and the opening angle of the secondary jets. Thus one can identify directly the contribution from the triple-gluon vertex without comparison with a specific non-QCD model. Applying this new method to events taken with the DELPHI-detector we get for the ratio of the colour factor NC to the fermionic Casimir operator CF: NC/C F=2.55±0.55(stat.)±0.4(fragm.+models)±0.2(error in bias) in agreement with the value 2.25 expected in QCD from NC=3 and CF=4/3. |
| first_indexed | 2024-03-07T04:09:55Z |
| format | Journal article |
| id | oxford-uuid:c77daa3c-3175-456b-a300-d6f65cd87996 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:09:55Z |
| publishDate | 1991 |
| record_format | dspace |
| spelling | oxford-uuid:c77daa3c-3175-456b-a300-d6f65cd879962022-03-27T06:45:25ZExperimental study of the triple-gluon vertexJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c77daa3c-3175-456b-a300-d6f65cd87996EnglishSymplectic Elements at Oxford1991Abreu, PAdam, WAdami, FAdye, TAkesson, TAlekseev, GAllen, PAlmehed, SAlted, FAlvsvaag, SAmaldi, UAnassontzis, EApel, WAsman, BAstier, PAugustin, JAugustinus, ABaillon, PBambade, PBarao, FBarbiellini, GBardin, DBaroncelli, ABarring, OBartl, WIn four-jet events from e+e-→Z0→multihadrons one can separate the three principal contributions from the triple-gluon vertex, double gluon-bremsstrahlung and the secondary quark-antiquark production, using the shape of the two-dimensional angular distributions in the generalized Nachtmann-Reiter angle 0NR* and the opening angle of the secondary jets. Thus one can identify directly the contribution from the triple-gluon vertex without comparison with a specific non-QCD model. Applying this new method to events taken with the DELPHI-detector we get for the ratio of the colour factor NC to the fermionic Casimir operator CF: NC/C F=2.55±0.55(stat.)±0.4(fragm.+models)±0.2(error in bias) in agreement with the value 2.25 expected in QCD from NC=3 and CF=4/3. |
| spellingShingle | Abreu, P Adam, W Adami, F Adye, T Akesson, T Alekseev, G Allen, P Almehed, S Alted, F Alvsvaag, S Amaldi, U Anassontzis, E Apel, W Asman, B Astier, P Augustin, J Augustinus, A Baillon, P Bambade, P Barao, F Barbiellini, G Bardin, D Baroncelli, A Barring, O Bartl, W Experimental study of the triple-gluon vertex |
| title | Experimental study of the triple-gluon vertex |
| title_full | Experimental study of the triple-gluon vertex |
| title_fullStr | Experimental study of the triple-gluon vertex |
| title_full_unstemmed | Experimental study of the triple-gluon vertex |
| title_short | Experimental study of the triple-gluon vertex |
| title_sort | experimental study of the triple gluon vertex |
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